That's because the settings file wasn't erased on your uninstall. Uninstall IPTV Stalker again, shut down Kodi, and delete the following folder if you are on a PC:
C:\Users\<your account>\AppData\Roaming\Kodi\userdata\addon_data\plugin.video.stalker
Start up Kodi, making sure you don't have IPTV Stalker installed, and install the version that was posted, and reconfigure.